Mincon 5-7/8 DTH Hammer Bit with Concave Face with 18 buttons Dome, 8 splines

NEW, out of original box – laid around shop shelf dirty, no field use!! Mincon 5-7/8 DTH Hammer Bit with 2 nice large air ports, Concave Face w/ 18 buttons Dome, 8 splines with choke tube. Original box gone, not sure about proper part number.